| dbp:desc
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- 0001-02-05 (xsd:gMonthDay)
- 0001-03-05 (xsd:gMonthDay)
- 0001-03-11 (xsd:gMonthDay)
- 0001-03-15 (xsd:gMonthDay)
- 0001-03-16 (xsd:gMonthDay)
- 0001-03-22 (xsd:gMonthDay)
- 0001-03-27 (xsd:gMonthDay)
- 0001-03-30 (xsd:gMonthDay)
- 0001-03-31 (xsd:gMonthDay)
- 0001-04-01 (xsd:gMonthDay)
- 0001-04-02 (xsd:gMonthDay)
- 0001-04-17 (xsd:gMonthDay)
- 0001-05-10 (xsd:gMonthDay)
- 0001-05-12 (xsd:gMonthDay)
- 0001-06-14 (xsd:gMonthDay)
- 0001-10-26 (xsd:gMonthDay)
- 0001-12-31 (xsd:gMonthDay)
- The G-5-class motor torpedo boat was lost on this date. (en)
- The naval trawler/Vorpostenboot was lost on this date. (en)
- The MFP-C2 landing craft was sunk on this date. (en)
- The MZ-A landing craft was sunk on this date. (en)
- The MZ-B landing craft was sunk on this date. (en)
- The Siebel ferry was lost on this date. (en)
- The Vorpostenboot was lost on this date. (en)
- The auxiliary guard ship was lost on this date. (en)
- The guard ship was sunk on this date. (en)
- The naval trawler was lost on this date. (en)
- The StuBo42 type landing craft/motor launch was sunk on this date. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by with the loss of all 51 crew. (en)
- The Siebelgefäß landing craft was sunk on this date. (en)
- The auxiliary submarine chaser was lost on this date. (en)
- The PiLB 40 type landing craft was lost on this date. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by . (en)
- The MFP-C landing craft was sunk on this date. (en)
- The MFP-D landing craft was sunk on this date. (en)
- The auxiliary patrol ship was lost on this date. (en)
- The landing craft personnel (small) was lost on this date. (en)
- World War II: The cargo ship was sunk in an air attack at Rabaul, New Guinea. (en)
- World War II: The patrol boat was sunk by German aircraft. (en)
- World War II: The picket ship was sunk in an air attack at Rabaul, New Guinea. (en)
- World War II: The Fort ship was torpedoed, shelled and sunk in the Indian Ocean by . Her crew were rescued by and tug . (en)
- World War II: Convoy H-19: The Nittai Maru-class auxiliary transport ship was torpedoed and sunk in the Celebes Sea north west of Halmahera, New Guinea by . A crewman was killed. (en)
- The auxiliary minesweeping boat was sunk by a storm in the Kerch Straits. (en)
- World War II: The guard ship struck a mine and sank in the Baltic Sea off Fehmarn. The crew was rescued. (en)
- World War II: The Type VIIC submarine was sunk in the Norwegian Sea by a Fairey Swordfish aircraft of 816 Squadron Fleet Air Arm based on with the loss of 51 of her 66 crew. (en)
- World War II: The Siebel ferry was sunk in the Aegean Sea by Allied aircraft. (en)
- World War II: The Sperrbrecher struck a mine and sank in the Skagerrak. (en)
- World War II: Convoy MKS 40: The landing ship tank was torpedoed and sunk in the Atlantic Ocean by . 15 crew and 73 British troops were killed. There were 92 survivors. (en)
- World War II: The naval whaler was torpedoed and sunk in the Indian Ocean off the coast of Ceylon by with the loss of all 26 crew. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Tyrrhenian Sea off Ostia, Italy by , , , and . All 42 crew survived. (en)
- World War II: The was sunk in the Pacific Ocean by the malfunction of one of her own torpoedos which had been fired at Japanese convoy Nishi-Matsu No. 2/TAPA-06. Only one of her 60 crew survived, rescued by . (en)
- World War II: The naval trawler/minesweeper was sunk by a mine off Saint-Malo, France. (en)
- World War II: Convoy SNF 17: The troopship was torpedoed and sunk in the Mediterranean Sea north north east of Bougie, Algeria by . All 333 people on board survived. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Mediterranean Sea off the coast of Tunisia by with the loss of all 51 crew. (en)
- World War II: The rescue launch was sunk in error by two Republic P-47 Thunderbolt aircraft in the North Sea. Eleven crewmen were killed or died of wounds, there were only two survivors. (en)
- The PiLB 40 type landing craft sank near Karolina-Bugaz, Ukraine. She was later raised and repaired. (en)
- World War II: The Siebelgefäß landing craft was sunk by aircraft off Jelsa, Hvar, Croatia. (en)
- World War II: The Greek motor schooner was sunk in the Bay of Corinth by Greek Partizans. Later raised and repaired by her owner. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by Grumman TBM Avenger aircraft based on (en)
- World War II: Three small fishing boats were sunk by and in Sandoway Bay, Burma. (en)
- World War II: The Type B submarine was torpedoed and sunk in the Pacific Ocean off Angaur Palau by with a loss of all 102 crewmen. (en)
- World War II: The Higgins 78-class PT boat was directing the fire of off Bougainville, Solomon Islands when she was hit by a shell fired by the destroyer and sunk with the loss of four lives. (en)
- World War II: Convoy Wewak Yuso Yoto Sakusen No. 4: The transport was torpedoed and sunk in the Pacific Ocean by . 46 of the 825 troops aboard and 43 crewmen died. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean north of Bali, Netherlands East Indies by . (en)
- World War II: The Sperrbrecher struck a mine and was severely damaged in the Bay of Biscay off La Pallice. (en)
- World War II: Operation Desecrate One: The was bombed, torpedoed and sunk in Malakal Harbor, Palau by United States Navy aircraft from Task Force 58. (en)
- World War II: The barge was bombed and sunk in an American air raid on Toulon, Var. (en)
- World War II: The gunboat was sunk by and . One killed, three wounded. (en)
- The harbor tug, medium sank in the Gilbert Islands or Marshall Islands sometime in March. (en)
- World War II: The accommodation ship was sunk in an American air raid on Toulon, Var, France. The wreck was scrapped in 1945. (en)
- The schooner barge capsized and sank in bad weather off Key Largo at . Wreck located in March, 2000. (en)
- World War II: The M 1940-class minesweeper, was sunk in Strander Bight by a mine. She was later salvaged and repaired. (en)
- World War II: The Type A Marinefährprahm struck a mine and was damaged in the Aegean Sea off Navarino, Greece. She was sunk the next day by Allied aircraft. (en)
- World War II: The timber carrier was torpedoed and sunk in the Sea of Okhotsk by . Her master and 39 crew were killed. There were two survivors. (en)
- World War II: Convoy CU 16: The was torpedoed and damaged in the Atlantic Ocean south of Iceland by with the loss of 171 of her 199 crew. She was abandoned and sank the next day. Survivors were rescued by . (en)
- World War II: Operation Desecrate One: The cargo ship was sunk off Palau by United States Navy aircraft from Task Force 58. Three crewmen were killed. (en)
- World War II: The steam trawler was bombed and sunk off Penmarc'h, France. Four of her fourteen crew were killed in the bombing and six died of exposure before the others were rescued. (en)
- World War II: The MTB 412-class motor torpedo boat was sunk in an attack on Kriegsmarine minesweepers off cap Blanc Nez, France with all 19 hands. (en)
- World War II: The MOB-FD-class naval trawler/submarine chaser was torpedoed and sunk by Allied aircraft off Lindesnes, Norway. (en)
- World War II: Operation Desecrate One: The oiler was bombed and sunk in Malakai Harbor, Babelthuap Island, Palau in the Pacific Ocean by United States Navy aircraft from Task Force 58. Ten crewmen were killed. (en)
- The auxiliary minesweeper was bombed and sunk at Toulon by Allied aircraft. (en)
- World War II: The PiLB 41 type landing craft was sunk by Allied fighter-bomber aircraft at Sumartin, Croatia. (en)
- The yard patrol boat began to take water probably due to seams breaking open and was abandoned in sinking condition by her seven crew who were rescued. She was taken in tow but drifted away and foundered in a storm in the Gulf of Mexico north of Key West, Florida . (en)
- World War II: The cargo ship was sunk in an Allied air raid on Split, Yugoslavia. (en)
- World War II: The tanker was torpedoed and sunk in the Indian Ocean by with the loss of seven of her 42 crew. (en)
- World War II: The auxiliary minesweeper was torpedoed and sunk in the English Channel off Gravelines, Nord by with the loss of 18 lives. (en)
- World War II: The SS-class landing ship was torpedoed and sunk off Manokawani, New Guinea by . (en)
- World War II: The coaster was shelled and sunk in the Norwegian Sea off Rødøy by with the loss of sixteen of the 25 people on board. (en)
- The floating torpedo battery was sunk on this date. (en)
- World War II: The cargo ship was torpedoed and sunk off Stad, Norway by . (en)
- World War II: The Liberty ship was torpedoed and damaged in the Mediterranean Sea off Palermo, Sicily, Italy by with the loss of 52 of the 478 people on board. Survivors were rescued by and two Fairmile B motor launches . (en)
- World War II: The incomplete was destroyed in an air raid on Venice, Italy. (en)
- The cargo steamer ran ashore off Sandheads, River Hooghli, India and was a total loss. There were no casualties: . (en)
- World War II: The PiLB 41 type landing craft was sunk by Allied fighter-bomber aircraft at Trogir, Croatia. (en)
- World War II: Convoy RA 57: The cargo ship was torpedoed and sunk in the Barents Sea east of Bear Island, Norway by . All 68 crew were rescued by . (en)
- The Siebelgefäß landing craft was sunk sometime in March. (en)
- World War II: The Type IXC/40 submarine was sunk in the Atlantic Ocean by , and two Grumman TBM Avenger aircraft based on with the loss of ten of her 57 crew. (en)
- World War II: The cargo ship was bombed and sunk in the Pacific Ocean off Hollandia, New Guinea by Consolidated B-24 Liberator aircraft of the United States Navy. (en)
- World War II: The cargo ship was bombed and sunk in the Pacific Ocean off Rabaul by North American B-25 Mitchell aircraft of the United States Army Air Force. (en)
- World War II: convoy Higashi Matsu No. 2: The was torpedoed and sunk in the Pacific Ocean south of Hachijō-jima by . Twenty-six crewmen were lost, ten were wounded. Survivors were rescued by and . (en)
- The Liberty ship broke in two in the Atlantic Ocean south east of St. John's Newfoundland. Her crew abandoned ship and were rescued by a corvette. towed the stern section to Halifax, Nova Scotia, Canada, where she was subsequently used as a depot ship. (en)
- World War II: The VAS 301-class submarine chaser was bombed and damaged beyond repair at Livorno, Italy by Allied aircraft. (en)
- The Liberty ship broke in two in the Atlantic Ocean and was abandoned. The stern section was towed to Halifax, Nova Scotia, Canada and put to use as a depot ship. (en)
- World War II: Operation Desecrate One: The aircraft transport was bombed and sunk in the Pacific Ocean off Palau by United States Navy aircraft from Task Force 58. Forty-five crewmen were killed. (en)
- World War II: The Vorpostenboot was sunk in the English Channel north east of Barfleur, Manche, France by British aircraft. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Arctic Ocean north west of Hammerfest, Norway by a Fairey Swordfish aircraft of 816 Squadron, Fleet Air Arm based on with the loss of all 50 crew. (en)
- World War II: Operation Desecrate One: The Peacetime Standard Type D transport was sunk in shallow water partially above water off Malakal Island, Palau by United States Navy aircraft from Task Force 58. Three crewmen were killed. Scrapped in place post War. (en)
- World War II: The minesweeper was sunk in an Allied air raid on Livorno, Italy. (en)
- World War II: The cargo ship was sunk during an Allied air raid on Livorno, Italy. (en)
- World War II: The transport was torpedoed and sunk in the Pacific Ocean north north west of Saipan by . Five hundred and ninety-nine passengers and crew were killed. There were 43 survivors. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean off Truk, South Pacific Mandate by . (en)
- World War II: The naval trawler/auxiliary minesweeper struck a mine and sank in the English Channel off Saint-Malo, Ille-et-Vilaine, France. (en)
- World War II: Convoy TASA-08: The Standard Type 1K ore carrier was torpedoed and sunk in the South China Sea west of Cape Bojeador, Luzon, Philippines by while towing . Six gunners and 46 crewmen were killed. (en)
- World War II: The cargo ship was torpedoed by at and beached in Nord-Trøndelag, Norway. She broke in two and was declared a total loss. (en)
- World War II: The cargo ship was torpedoed and sunk off Okidaitōjima in the Pacific Ocean by . 35 crew members were killed. (en)
- World War II: The cargo ship was torpedoed and sunk in the Gulf of Guinea by . Of the 95 people on board, two were taken as prisoners of war and were lost when U-66 was sunk. The others were rescued by . (en)
- World War II: The Sperrbrecher struck a mine and sank off Ostend, Belgium. (en)
- World War II: The tanker was torpedoed and sunk in the Caribbean Sea north of Barranquilla, Colombia by with the loss of one of her 35 crew. Survivors were rescued by a United States Coast Guard ship. (en)
- The landing craft support (mortar) sank during exercises off east Scotland. (en)
- World War II: The Vorpostenboot was sunk at IJmuiden in an air raid by Martin B-26 Marauder aircraft of the United States Eighth Air Force. (en)
- World War II: The cargo ship was bombed and sunk in the Pacific Ocean off Rabaul, New Guinea by North American B-25 Mitchell aircraft of the United States Army Air Force. (en)
- World War II: The Liberty ship was torpedoed and sunk in the Arabian Sea by with the loss of nine gunners and 43 crewmen. Survivors were rescued by . (en)
- World War II: The cargo ship was torpedoed and sunk by aircraft off Juist, Germany. (en)
- World War II: Convoy HI-48: The transport was torpedoed and sunk in the South China Sea east south east of Hong Kong by . Eight military passengers, 25 guards, and 55 crewmen were killed. (en)
- World War II: The Type VIIC submarine was depth charged, shelled and sunk in the Atlantic Ocean north of the Azores, Portugal by , , and with the loss of 50 of her 51 crew. (en)
- World War II: Operation Desecrate One: The was bombed, rocketed and sunk in Malakal Harbor, Urukhapel Island, Palau by United States Navy aircraft from Task Force 58. 69 crew were killed. (en)
- World War II: The was sunk off IJmuiden, Netherlands by Kriegsmarine surface ships. The whole crew was rescued, only one was wounded. (en)
- World War II: Operation Desecrate One: The auxiliary guard ship was off Palau in the Pacific Ocean by United States Navy aircraft from Task Force 58. (en)
- The landing craft mechanized was lost sometime in March. (en)
- World War II: The Gyoraitei No. 23-class motor torpedo boats were sunk by British aircraft off Boronga, Burma. (en)
- The cargo ship was wrecked off Trondheim, Norway. (en)
- The landing craft assault reported lost in April. (en)
- The landing craft assault was lost in Home Waters. (en)
- The naval drifter was lost on this date. (en)
- World War II: The cargo ship was torpedoed, shelled and sunk in the Indian Ocean by . The whole crew was rescued by . (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean west of the Mariana Islands by . (en)
- World War II: Operation Desecrate One: The transport was sunk off Palau by United States Navy aircraft from Task Force 58. Two crewmen were killed. (en)
- World War II: The patrol boat was sunk by . (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Strait of Gibraltar by , and three Consolidated PBY Catalina aircraft of the United States Navy with the loss of all 52 crew. (en)
- World War II: The Type VIIC submarine was sunk at Toulon in an American air raid with the loss of one life. (en)
- World War II: The Siebel ferry was sunk by fighters bombers in Vosica Bay, Hvar, Croatia. (en)
- World War II: Convoy AB 33: The cargo ship was torpedoed and sunk in the Arabian Sea east of Socotra, Mahra Sultanate by with the loss of three of the 148 people on board. Survivors were rescued by . (en)
- World War II: The cargo ship struck a mine and sank in the Baltic Sea off Fehmarn, Germany. There were no casualty. (en)
- World War II: Convoy SNF 17: The Type C2 cargo ship was torpedoed and damaged in the Mediterranean Sea north north east of Bougie by with the loss of eight of the 78 people on board. She was beached at Bougie but broke in two and was declared a constructive total loss. (en)
- World War II: Operation Desecrate One: The cargo ship was sunk off Palau in the Pacific Ocean by United States Navy aircraft from Task Force 58. Three crewmen were killed. (en)
- World War II: The was torpedoed and sunk in the Pacific Ocean east of Muroran, Hokkaido (en)
- World War II: The gunboat was sunk by German aircraft. One killed, two wounded. (en)
- World War II: Operation Desecrate One: The was sunk in the Pacific Ocean off the north shore of Uruthapel Island, Palau by United States Navy aircraft from Task Force 58. She sank in shallow water and was only partially submerged. (en)
- World War II: The MFP-C Type Artilleriefährprahm was sunk during an Allied air raid on Livorno. (en)
- World War II: The auxiliary net layer was torpedoed and sunk in the Pacific Ocean off the Nanpō Islands northeast of Torishima by . 28 crewmen killed. (en)
- The KSK-2-class naval drifter/minesweeper was lost on this date. (en)
- World War II: Convoy SL 150: The was torpedoed and sunk in the Atlantic Ocean west north west of Cape Finisterre, Spain by with the loss of 92 of her 97 crew. Survivors were rescued by . (en)
- World War II: The Type VIIC submarine was depth charged, shelled and sunk in the Atlantic Ocean by , and with the loss of all 52 crew. (en)
- World War II: The coaster struck a mine and sank in the Baltic Sea off Swinemünde. (en)
- World War II: The Siebelgefäß landing craft was sunk by Allied fighter-bombers in Bol, Brac Island, Croatia. (en)
- World War II: Operation Desecrate One: The tanker was bombed and sunk in the Pacific Ocean off Palau by United States Navy aircraft from Task Force 58. Five crewmen were killed. (en)
- World War II: The Sperrbrecher struck a mine and sank in the North Sea off Norderney. (en)
- World War II: Operation Desecrate One:The Shinryu Maru class auxiliary transport is bombed and damaged by aircraft from and both off Urukhapel Island, Malakai Harbor, Palau. On the 31st she is bombed and damaged by aircraft from , and finally sunk by SBD Dauntlesss and TBF Avengers from . (en)
- World War II: The Yukikawa Maru-class transport was torpedoed and damaged at by . She sank the next day when torpedoed again by Bowfin while under tow at . Two crewmen and four troops were killed. (en)
- World War II: The cargo ship was sunk in the Pacific Ocean east of the Kuril Islands by with the loss of all 45 hands. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean by , , , , , and with the loss of twelve of her 52 crew. (en)
- World War II: The Vorpostenboot struck a mine and sank off Brest, France. 24 crew were lost. (en)
- World War II: The submarine chaser was destroyed in an American air raid on Toulon. (en)
- World War II: The forward half of heavy cruiser, which had been salvaged in two halves in 1943, was sunk in an American air raid on Toulon. The stern half sank four days later. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south west of Guam by . 2 crew, 1 gunner and 27 passengers were killed. (en)
- World War II: Wewak Transportation Convoy No. 21: The auxiliary submarine chaser was bombed, strafed and sunk in the Bismark Sea north of Wewak, New Guinea by Douglas A-20 Havoc aircraft of the 3rd Bomb Group; Consolidated B-24 Liberator, North American B-25 Mitchell aircraft of the 345th Bomb Group, and Lockheed P-38 Lightning aircraft of the United States Fifth Air Force. Lost with all hands. (en)
- The KSK-2-class naval drifter/minesweeper was lost in a collision. (en)
- World War II: The coaster was torpedoed and sunk in the Barents Sea off Honningsvåg, Norway by with the loss of eleven of her thirteen crew. (en)
- World War II: The Sperrbrecher struck a mine and was severely damaged in the Bay of Biscay off La Pallice, Charente-Maritime, France. (en)
- World War II: The PiLB 41 type landing craft was sunk by Allied fighter-bombers near Ugljan island, Croatia. (en)
- The cargo ship was run into by between Gedser and Møn, Denmark and sank. (en)
- World War II: The cargo ship was torpedoed and damaged in Flekkefjord by . She saw no further service for the duration of the war. (en)
- World War II: The cargo ship was bombed and sunk in the Pacific Ocean off Greenwich Island, New Guinea by Consolidated B-24 Liberator aircraft of the United States Army Air Force. (en)
- World War II: Wewak Transportation Convoy No. 21: The Shinryu Maru-class auxiliary transport was bombed, strafed and sunk in the Bismarck Sea north of Wewak, New Guinea by Douglas A-20 Havoc aircraft of the 3rd Bomb Group; Consolidated B-24 Liberator, North American B-25 Mitchell aircraft of the 345th Bomb Group, and Lockheed P-38 Lightning aircraft of the United States Fifth Air Force. Forty-eight troops and 62 crewmen were lost. rescues Yakumo Marus third officer the next day, the convoy's sole survivor. (en)
- World War II: The sailing vessel was sunk in the Mediterranean Sea off Cape Maleas, Greece by . Eight of her crew were taken as prisoners of war. (en)
- World War II: The cargo ship was bombed and sunk by aircraft at Dubrovnik, Yugoslavia. (en)
- World War II: The Type VIIC submarine was sunk in the Barents Sea by a rocket attack by Fairey Swordfish aircraft of 816 Squadron, Fleet Air Arm base on and by shelling from with the loss of 23 of her 43 crew. (en)
- World War II: Operation Desecrate One: The was torpedoed and sunk into Karamadoo Bay, west of Babelthaup, Palau by United States Navy aircraft from Task Force 58. (en)
- World War II: The cargo ship was torpedoed and sunk in the South Atlantic by . The crew was massacred by the Germans to hide the traces of the attack. Three of her 35 crew survived and were rescued by . (en)
- World War II: The was torpedoed and sunk in the Atlantic Ocean off Portugal by with the loss of 123 of her 137 crew. (en)
- World War II: The minesweeper, a former Crabe-class naval tugboat, was bombed and sunk at Toulon by Allied aircraft. (en)
- World War II: The tanker was torpedoed and sunk in the Pacific Ocean off Borneo by . (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean south east of Okinawa by . (en)
- World War II: The cargo ship struck a mine and sank in the Indian Ocean off Koh Chang, Thailand. (en)
- World War II: The banana boat was sunk off the mouth of the Ebro by Royal Air Force aircraft. Ten crewmen were killed. (en)
- World War II: The Siebel ferry was sunk at Tkon, Pasman Island, Croatia by Curtiss Kittyhawk aircraft of 3 Squadron RAAF. (en)
- World War II: The Type IXC/40 submarine was depth charged and sunk in the Atlantic Ocean by , , and with the loss of ten of her 55 crew. (en)
- World War II: The PiLB 40 type landing craft was sunk by an air attack west of Berezan Island. Three crew were killed. (en)
- World War II: The submarine chaser was destroyed in an American air raid on Toulon, Var, France. (en)
- The landing craft infantry (large) was lost on this date, details unknown. (en)
- The Vosper 70-foot class motor torpedo boat was sunk in a collision in the North Sea. (en)
- World War II: Convoy CU 17: The tanker was torpedoed and sunk in the Atlantic Ocean west of the Fastnet Rock by with the loss of one of the 85 people on board. Survivors were rescued by . (en)
- World War II: The Type R-151 minesweeper was bombed and damaged beyond repair at Šibenik by Allied aircraft. She was scuttled two days later. (en)
- World War II: The cargo ship was torpedoed and sunk in the Atlantic Ocean off Accra, Gold Coast by with the loss of 85 of the 134 people on board. (en)
- World War II: The motor torpedo boat was captured by Kriegsmarine motor torpedo boats at Ak Mechet, but it sank due to battle damage. (en)
- World War II: The cargo ship was sunk in the Banda Strait by Consolidated PBY Catalina aircraft of the Royal Australian Air Force. (en)
- World War II: The L-class destroyer was torpedoed and sunk in the Mediterranean Sea north of Palermo, Sicily, Italy by with the loss of 182 of her 247 crew. Survivors were rescued by , and . (en)
- World War II: The Siebel ferry struck a mine and sank in the Adriatic Sea off Navarino. (en)
- World War II: Convoy No. 4328: The Kasuga Maru-class transport was torpedoed and sunk in the Pacific Ocean 350 miles north north west of Saipan, Mariana Islands by . Fifteen troops and eleven crewmen were killed. Survivors were rescued by . (en)
- World War II: The Type B submarine was depth charged, hedgehoged, mousetrapped and sunk with all hands in the Pacific Ocean south of Wotje Atoll by , , and . (en)
- World War II: The guard ship struck a mine and sank in the Baltic Sea off Neufarhwasser. (en)
- World War II: Convoy H-22: The Shinkyo Maru-class transport was torpedoed and sunk in the Pacific Ocean east of Cape Chinaka, Mindanao, Philippine Islands by . Twelve crewmen and 49 passengers were lost. (en)
- thumb|U-625
World War II: The Type VIIC submarine was depth charged and sunk in the Bay of Biscay by a Short Sunderland aircraft of 422 Squadron, Royal Canadian Air Force with the loss of all 52 crew. (en)
- World War II: The Vorpostenboot was sunk in the North Sea off IJmuiden, North Holland, Netherlands by , , , , and . There were 20 dead and 19 missing. (en)
- World War II: The Type VIIC submarine was bombed and sunk at Toulon in an American air raid. (en)
- World War II: The coaster was sunk in Suda Bay by an Allied air attack. 59 of the 90 Italian prisoners aboard died. (en)
- World War II: Operation Desecrate One: The oiler was bombed, torpedoed and sunk in Kobasang Harbor, Palau by United States Navy aircraft from Task Force 58. Eighteen crewmen were killed. (en)
- World War II: The cargo ship was torpedoed and sunk in the Indian Ocean west of the Maldive Islands by . About 98 survivors were brought aboard where they were massacred by the crew with swords, wrenches and sledgehammers. Some jumped into the water and were machine gunned. Only five or six survived to be rescued by . (en)
- World War II: Convoy TASA-08: The Standard Type 1K ore carrier was torpedoed and damaged in the South China Sea south east of Hong Kong by . She was taken in tow by . She was torpedoed again the next day by USS Lapon and sank in the South China Sea of Cape Bojeador, Luzon, Philippines . Fifteen people were killed. (en)
- World War II: The S-class submarine struck a mine and sank in Syltefjord, Norway with all 50 hands. (en)
- The landing craft tank was sunk at Eniwetok by the accidental explosion of her ammunition cargo. One hundred and twelve men were wounded, ten seriously, and five men were killed. (en)
- The cargo ship was lost in a collision off Stavanger, Norway. (en)
- The No. 1-class landing boat was sunk by a storm in the Black Sea. (en)
- World War II: The transport ship was torpedoed and sunk in the Strait of Malacca by . (en)
- World War II: The cargo liner was torpedoed and sunk in the Pacific Ocean (en)
- World War II: The torpedo boat, a former , was sunk off Heraklion, Greece by rocket firing British aircraft with the loss of 16 crew. Later raised and taken to Piraeus for repairs. She was sunk there in an Allied air raid. (en)
- The Type VIIC/41 submarine collided with in the Baltic Sea east of Rügen, Mecklenburg-Vorpommern and sank with the loss of 25 of her 51 crew. (en)
- World War II: convoy Higashi Matsu No. 2: The transport was torpedoed and sunk in the Pacific Ocean south of Hachijō-jima by . Survivors were rescued by (en)
- World War II: The cargo ship was torpedoed and sunk in the North Sea off Schiermonnikoog, Friesland, Netherlands by Royal Air Force aircraft with the loss of two of her crew. (en)
- World War II: The Liberty ship struck a mine in the Mediterranean Sea off Tunis, Tunisia. She was declared a total loss. (en)
- World War II: The Type 1939/40 Schnellboot was sunk at IJmuiden in an air raid by Martin B-26 Marauder aircraft of the United States Eighth Air Force. (en)
- The landing craft assault (hedgerow) was lost in Home Waters. (en)
- World War II: Convoy H-22: The Somedono Maru-class transport was torpedoed and sunk in the Pacific Ocean east of Cape Chinaka, Mindanao, Philippine Islands by . Forty-one crewmen, four gunners and 161 passengers were lost. (en)
- World War II: The tanker was torpedoed and sunk at Addu Atoll, Maldives by . She was salvaged and returned to use as a hulk. (en)
- World War II: Higashi-Matsu Convoy no. 3: The No.28-class submarine chaser was torpedoed and sunk in the Pacific Ocean north of Muko Jima by . (en)
- World War II: The Type VIIF submarine was sunk in the Atlantic Ocean south west of the Cape Verde Islands by Grumman TBF Avenger and Grumman F4F Wildcat aircraft based on with the loss of 47 of her 55 crew. (en)
- The , 2,638-gross register ton cargo liner was wrecked without loss of life on Devil's Bridge, a reef off Gay Head on Martha's Vineyard off the coast of Massachusetts. Her wreck settled in up to of water at . (en)
- World War II: The tanker was shelled and sunk in the English Channel off Boulogne, Pas de Calais, France by British shore-based artillery. (en)
- The naval trawler/minesweeper was sunk on this date. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Atlantic Ocean north of the Faroe Islands by ) with the loss of all 49 crew. (en)
- The dredge was destroyed by fire at Arlington, Florida. (en)
- World War II: The cargo ship was sunk in an Allied air raid on Chioggia, Venice. (en)
- The Fairmile B motor launch was sunk by an internal explosion at Beirut, Syria. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by . Six crew were killed. (en)
- The 615-gross register ton, motor vessel was destroyed by fire in Tongass Harbor on the coast of Annette Island in the Gravina Islands in the Alexander Archipelago in Southeast Alaska. (en)
- World War II: The Liberty ship was bombed and damaged in the Mediterranean Sea off Bizerta, Algeria by Luftwaffe aircraft. She was beached but declared a total loss. (en)
- World War II: The Type VIIC submarine was torpedoed and sunk by a Fairey Swordfish of and by gunfire from and . (en)
- World War II: The coastal tanker was torpedoed and sunk in the Aegean Sea off Monemviasa, Greece by . There were six wounded and one missing. (en)
- World War II: The cargo ship was sunk in an Allied air raid on Zara, Yugoslavia. (en)
- World War II: Wewak Transportation Convoy No. 21: The transport was bombed, strafed and sunk in the Bismarck Sea north of Wewak, New Guinea by Douglas A-20 Havoc aircraft of the 3rd Bomb Group; Consolidated B-24 Liberator, North American B-25 Mitchell aircraft of the 345th Bomb Group, and Lockheed P-38 Lightning aircraft of the United States Fifth Air Force. Lost with all hands, Fifty troops and 78 crewmen. (en)
- The landing craft assault (hedgerow) foundered off eastern Scotland during exercises. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by . Lost with all on board . (en)
- The landing craft personnel (ramped) sank in the Mediterranean Sea. (en)
- World War II: The Siebelgefäß landing craft was sunk by fighter-bomber aircraft off Brac Island in the Adriatic Sea. (en)
- World War II: The Jacquilne-class naval trawler/ auxiliary minesweeper was torpedoed and sunk in the Bay of Biscay off La Pallice, Charente-Maritime, France by aircraft of Coastal Command, Royal Air Force. (en)
- World War II: The submarine chaser was sunk in an Allied air raid on Livorno. (en)
- World War II: The S-class submarine struck a mine and sank in the Norwegian Sea off Bodø, Norway with the loss of all 48 crew. (en)
- World War II: The cargo ship was bombed and sunk in an American air raid on Toulon. (en)
- World War II: The gunboat was sunk by German aircraft. (en)
- World War II: The cargo ship was bombed and sunk in the Pacific Ocean off Hollandia by Consolidated B-24 Liberator aircraft of the United States Navy. (en)
- World War II: The SS 1-class landing ship was sunk by a submarine off New Guinea. (en)
- World War II: The cargo ship struck a mine and sank in the Black Sea off Cape Lukul. One crewman was lost. (en)
- World War II: Operation Desecrate One: The merchant ship was sunk at or near Palau by United States Navy aircraft from Task Force 58. Five crewmen were killed. (en)
- World War II: The cargo ship was sunk in Suda Bay by an Allied air attack. (en)
- World War II: Convoy SH 124: The cargo ship was torpedoed and sunk in the Atlantic Ocean south east of Halifax, Nova Scotia by with the loss of one of her 26 crew. Survivors were rescued by . (en)
- World War II: The cargo ship was torpedoed and sunk in the Indian Ocean by . 20 crew members and 18 gunners were killed. (en)
- World War II: The Liberty ship struck a mine and was damaged in the Mediterranean Sea. She was towed to Tunis, Tunisia but broke in two and was declared a constructive total loss. (en)
- World War II: The Type VIIC submarine was depth charged and sunk in the Mediterranean Sea by , , and with the loss of 23 of her 50 crew. (en)
- World War II: The cargo ship was sunk, probably by a mine, north of Rhodes. (en)
- World War II: The cargo ship struck a mine and sank in the Kattegat off Gilleleje, Denmark. (en)
- World War II: The was bombed and sunk in the South Atlantic south of the Cape of Good Hope, South Africa by South African Air Force aircraft with the loss of all 43 crew. (en)
- World War II: The MAS 501-class MAS boat was rammed and sunk off Anzio, Lazio by . Eight Italian crew were killed, five more Italians and two Germans were captured. (en)
- World War II: Operation Desecrate One: The was bombed and sunk off Palau by United States Navy aircraft from Task Force 58 . (en)
- World War II: The Gyoraitei No. 1-class motor torpedo boat was bombed and sunk at Wake Island by US Army Consolidated B-24 Liberator aircraft. (en)
- World War II: The Liberty ship struck a mine and sank in the Mediterranean Sea off Bizerta, Algeria . 24 troops, 4 gunners and 9 crewmen killed. Survivors were rescued by , Thelma and . (en)
- The decommissioned Type VIIC submarine broke its tow, drifted aground off Could Point, Islay and was wrecked. (en)
- World War II: The Type 1939/40 Schnellboot was sunk at IJmuiden, North Holland, Netherlands in an air raid by Martin B-26 Marauder aircraft of the United States Eighth Air Force. (en)
- World War II: The tanker was torpedoed and sunk in the Atlantic Ocean by ). All 47 crew were rescued by . (en)
- World War II: The submarine chaser, a former , was bombed and sunk at Šibenik by United States Army Air Force aircraft. (en)
- World War II: Operation Desecrate One: The Shinsei Maru No. 18-class transport was bombed and sunk in Palau harbor United States Navy aircraft from Task Force 58. Seven crewmen were killed. (en)
- World War II: The Siebel ferry struck a mine and was damaged in the Adriatic Sea off Navarino. She was sunk the next day by Allied aircraft. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean north of Yap, Caroline Islands by . 29 crewmen were killed. (en)
- World War II: Wewak Transportation Convoy No. 21: The auxiliary submarine chaser was shelled and sunk in the Bismarck Sea at Mushu Island, Wewak New Guinea by . Lost with all hands. (en)
- The submarine chaser burned at Vella Lavella, Solomon Islands in a refueling accident. One man died and seven were missing. (en)
- World War II: The Type VIIC submarine was sunk in the Bay of Biscay off Saint-Nazaire, Loire Atlantique, France by two de Havilland Mosquito aircraft of 248 Squadron, Royal Air Force with the loss of four of her 53 crew. (en)
- World War II: The cargo ship struck a mine and sank in the Baltic Sea off Cuxhaven, Germany. The whole crew was rescued. (en)
- World War II: The stern half of heavy cruiser, which had been salvaged in two halves in 1943, sank due to damage suffered in an American air raid on Toulon four days earlier. The forward half had sunk on the day of the raid. (en)
- World War II: The Type R-151 minesweeper was bombed and sunk at Šibenik, Yugoslavia by United States Army Air Force aircraft. (en)
- World War II: The salvage vessel struck a mine and sank in the North Sea off Wangerooge, Lower Saxony, Germany. (en)
- World War II: The cargo ship was torpedoed and sunk in the North Sea off Obrestad, Norway by an air attack. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean west of Eashima Jima by . Forty-two passengers and fourteen crewmen were killed. (en)
- World War II: Operation Desecrate One: The was torpedoed and sunk into Karamadoo Bay, west of Babelthaup Island, Pala in the Pacific Ocean by United States Navy aircraft from Task Force 58. (en)
- World War II: The cargo liner was torpedoed and sunk in the Indian Ocean by . 10 crew, 6 gunners and 364 troops died. The British-flagged Norwegian steamer Lovstad rescued the 814 survivors. (en)
- World War II: The cargo ship was torpedoed and sunk in the Indian Ocean north east of Cape Comorin, India by with the loss of 47 of her 54 crew. (en)
- World War II: The ELCO 80-class PT boat was bombed and sunk in Bangula Bay, New Britain Island by Consolidated PBY Catalina aircraft of the Royal Australian Air Force. (en)
- World War II: The cargo ship struck a mine and sank in the Bay of Kiel. (en)
- World War II: The oiler was torpedoed and sunk in the South China Sea west of Miri, Borneo by . Forty-six crewmen were killed. (en)
- World War II: Operation Desecrate One: The cargo ship was sunk off Palau by United States Navy aircraft from Task Force 58. Five crewmen were killed. (en)
- World War II: Operation Desecrate One: The cargo ship was sunk off Palau by United States Navy aircraft from Task Force 58. Four crew were killed. (en)
- The Type VIIC submarine was sunk at Neustadt in Holstein, Schleswig Holstein in a training accident. Later raised but declared a total loss. (en)
- World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean north west of Manokwari, New Guinea by (en)
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